Re: Low ACTH normal cortisol should I be concerned?
In ordinary Addison's disease, ACTH is high to compensate for the low cortisol, so your results would suggest a pituitary origin, and that's where the workup should focus. You might consider seeing a specialist at your local university health clinic, where more heads are put together to solve problems like this. An MRI would probably be done after measuring all pituitary hormones. Keep us posted on your diagnostic progress, please. This should be treatable, and you should feel better once treatment stabilized!